i tried to change the fav-icon for my OTRS 5.0.16 installation, following the OTRS manual (creating my own theme, ...).
http://doc.otrs.com/doc/manual/admin/st ... hemes.html
I created my own skin (which is working fine) and theme (which is NOT working).
The one and only task for the theme is, to change fav icon.
What did i do?
I created /opt/otrs/Kernel/Output/HTML/Templates/custom/ folder for my theme.
Then i copied the files HTMLHead.tt and Login.tt from the Standard folder to my custom folder.
I edited the files and changed the product.ico path to match the new icon (<link rel="shortcut icon" href="/otrs-web/skins/Agent/custom/img/icons/product.ico" type="image/ico" />).
Afterwards i added the theme in the SysConfig Frontend::Themes and selected the theme for my user.
OTRS says "updated successfully", but the fav-icon stays the same.
Which step did i miss this time?

Best regards
Alcesh